The Civil War started early in Missouri. In 1854 fighting flared up over whether the neighboring Kansas Territory would become a slave state. Pro-slavery Missourians raided Kansas to kill and intimidate abolitionists, and Kansans raided Missouri, killing slave owners and liberating slaves.

When the first official shots of the Civil War were fired at Fort Sumter on 12 April 1861, Missouri was already prepared for an all-out fight, yet nobody knew which side it would take. While Missouri’s legislature and much of its population supported the South, its large German-American population and many of its cities and towns were Unionist.

The Confederates made the first move. The secessionist State Guard camped on the edge of St. Louis, supposedly for their annual drill but really planning on taking the Federal arsenal. The local Federal commander, a hotheaded professional soldier named Capt. Nathaniel Lyon, gathered several units of soldiers, surrounded the State Guard camp, and forced them to surrender. The move caused a riot in the city in which one soldier and 27 civilians died. It looked like the war was on.

%Gallery-124755%Then everyone hesitated. Leaders from both sides met in St. Louis to try to salvage the situation. Heading the rebel delegation was Sterling Price, commander of the State Guard, and Claiborne Fox Jackson, Missouri’s governor. The Union delegation made the mistake of bringing Lyon along. The devoted abolitionist had no illusions about the possibility of peace. He shouted at the Confederates that he’d rather kill every man, woman, and child in Missouri rather than have the state dictate terms to the Federal government.

That was that. Price and Jackson took a train from St. Louis west to the state capital at Jefferson City in the center of the state, but decided there were too many abolitionist German immigrants in town for comfort. They decided to gather their forces at Boonville, a prosperous, and secessionist, town 50 miles west on the Missouri river. Soon state militiamen and excited farm boys were rallying to the cause in Boonville, ready to fight the Yankees.

Lyon and 2,000 troops arrived at Jefferson City on June 15 to find the rebellious state government had fled to Boonville. They set out to meet them in a flotilla of steamboats.

While the rebels should have been led by Sterling Price, he came down with a bout of cholera and was home stinking up the outhouse. Command fell to Col. John Sappington Marmaduke, Governor Jackson’s nephew, who had resigned his commission in the U.S. Army in order to throw his lot in with the Confederacy. Marmaduke didn’t want to fight. His “army” numbered about 1,500. Few had any training and only about a third of them were armed. Yet Governor Jackson insisted they make a stand. He feared a retreat would lead to the disintegration of their nascent army.

On the morning of June 17, Lyon landed about seven miles east of Boonville with 1,500 men. Marmaduke, alerted to the danger, marched about 500 of his men to the top of a long ridge four miles east of Boonville. The terrain was good, with a wheat field to hide his inferior numbers, and a house to hide sharpshooters in.

Lyon’s professional troops, accompanied by a battery of cannon, marched along the river road towards town. Soon rebel pickets fired at them, then quickly withdrew in the face of such a large force. The Union troops soon found themselves facing the long, low hill atop which Marmaduke and his men waited. Lyon ordered the cannon unlimbered and the battery sent shot after shot onto the ridge as the Union infantry slowly advanced.

Gritting their teeth and trying to ignore the cannonballs whirring through the air around them, the rebels shot at the advancing troops. Their untrained fire proved inaccurate, and the Union ranks moved resolutely forward. Their artillery knocked two holes into the wall of the house, forcing the rebels inside to run. Marmaduke ordered a general retreat.

A few Confederates made a second line on the top of another hill. Once again the two sides poured fire at each other, and once again Union discipline and marksmanship took their toll. The rebels retreated once more, this time in complete disarray. Accounts vary, but it seems that there were about a dozen casualties on either side.

The first Union victory in Missouri had taken only twenty minutes. The Confederates ran so fast both sides ended up calling it the “Boonville Races.”

The Battle of Boonville had a significance far out of proportion to its size. The Union now controlled the Missouri River, which cut from west to east through the center of the state. The northern counties never got to organize in support of the Confederacy. The river also kept open a vital Federal supply line to Kansas. If the Confederates had been able to hold onto it, Kansas and the loyal territories to the west would have been nearly cut off. While the Confederates continued to fight for Missouri, the prosperous state with its industry and agriculture was never under any serious threat of falling into their hands.

Although there were a few little skirmishes before this like those at Philippi, West Virginia, and Bethel Church, Virginia, the Battle of Boonville was the first battle to have an effect on the outcome of the war.

Now to celebrate its 150th anniversary, the Battle of Boonville will be refought. from June 17-19 there will be reenactments, talks, and living history demonstrations. I’ve been to several reenactments in Missouri and the folks that do them really know their history and put on a great show. If you’re in the area, be sure to mark your calendar.